云屯雾散

Explanation: Clouds gathered, such as the birds scattered. Describe the large number of people suddenly gather suddenly scattered. 　　Source: "Suishu Liang Rui Biography" So weeks supreme operator, received the worst of the Han, with its prosperous and to suddenly go, cloud Tuen fog lifted, strong, committed Cheng their plugs, weak and in addition it is also not possible. "